<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="hello02/download"
      method="get" enctype="multipart/form-data">

        名称:
        <input type="text" name="userName" value="李四"/>
        头像：
        <input type="file" name="headPicture">
        <button type="submit">下载</button>


</form></body>
</html>